Stability Prediction of Milling Process with Variable Pitch Cutter

Figure 7

Stability charts for alternating pitch variation cutter with 𝛽=30^∘, 𝑁=4, and different 𝑝_𝑣 under 50% radial immersion: 𝑝_𝑣=0 (𝐏=[90^∘,90^∘,90^∘,90^∘]). 𝑝_𝑣=0.222 (𝐏=[70^∘,110^∘,70^∘,110^∘]). 𝑝_𝑣=0.333 (𝐏=[60^∘,120^∘,60^∘,120^∘]).